Rotary engine.



No. 634,002. 'l

. Patented mit. s, 1899. P. KAHELLEK.

HTABY ENGINE.

{Application led Nov. 12, 189B.-

3 Sheets-Sheet l,

(No Nudel.)

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No. 634,002. Patented 0st. 3,1899.

P. KAHELLEK.

ROTARY ENGINE.

(Applicstion led Nov. 12, 1898.' K

(No Model.) v 3 Sheets-Sheet 2.

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N. 634,002. Patented Oct. 3, |899. P. KAHELLEK.

ROTARY ENGINE. (Applicafion iled Nov. 12, 1898.)

(No Model.)

@MGM/Q UNITED STATESx PATENT OFFICE.

PETER KAHELLEK, OF BRECKENRIDGE, MINNESOTA.

vlio-miur Encima.i

SPECIFICATION forming part of Letters Patent No. 634,002, dated October 3, 1899.

n Application'iiled `November 1898. Serial No. 696,217. 'KNO model.) u

To all whom, it may concern: p Be it known that I, PETER KAHELLEK, of Breckenridge, Wilkin county, Minnesota, have invented' certain Improvements in Rotary Engines,of'which the followin gis a specication.

Mynvention relates to improvements in rotary engines; and it consists in the features of construction and combination hereinafter particularly described and claimed.

In the accompanying drawings, Figure 1 is a side elevationof myimproved engine, showing the valve-operating' mechanism. Fig. 2 is a vertical longitudinal section. Fig. 3 is a top view, partly broken away to show one of the valves and ports. Fig. 4 is a View of the valve-actuating mechanism in reversed position from that shown in Fig. 1, and Fig. 5 is a section on line y y of Fig. 2.

In the drawings, A represents the cylinder cored out to form the piston-chambers 2 and 3. 4 and 5 represent rotary pistons arranged in said chambers and mounted upon the shafts 6. The pistons are provided in their ends with spring-actuated packing-strips.

Arranged in recesses in the upper and lower walls of the piston-chambers are sliding abutments 7, normally held in contact with the pistons by means of springs 8. Leakage of steam around the abutments is prevented by means of spring-actuated packing-strips 9.

Steam is supplied to the engine through the rotary valves 10, 11, 12, and 13, said valves being arranged in the valve-chambers 14, connected with the source of steam-supply by means of piping 15. Each of the valve-chambers is connected with one of thepiston-chambers by ports 13 and 17, one of which ports serves as an inlet-port While the other is serving as an exhaust-port. The Valves are each formed With a passage 18, which connects one of the ports 16 or 17, as the case` may be, with the outlet exhaust-port 19, the steam passing through said outlet exhaust-port to the piping 20. The valves are controlled and actuated by the mechanism shown best in Figs. 1 and 4. This mechanism consists of a crankarm 21, secured upon each of the valve-stems 22,said crank-arms beingconnected by means of the rods 23 with the double'crank 24, having pivotal support 25.

connectin g-rod 30. The eccentric 26 is in turn operated by means of the gear 31, mounted upon the stud 27 and provided witha pin 32, fitting in a slot 33 inthe eccentric, said gear 31 beingdrivenby a gear 34, mounted upon the shaft of the piston 4, as shownin Fig. 1.

The pistons 4 and 5 are operatively connected by rods 35 and 36, the rod 35 connecting it With the double crank 24. The engine is provided with a suitable ily-Wheel 42.

Operation: With the parts in the position shown in Fig. 2 live steam will enter through the upper right-hand port 16 and the lower righthand port 17. The steam entering through the port 16 will act upon the end of the piston .5, with the upper abutment serving` as a back Wall, and the 'steam entering through the port 17 Will act both upon the opposite end of the piston 5 and lower end of piston 4. While steam is being thus admitted, exhaust is taking place through the upper right-hand port 17 and the lower righthand port 16. As the pistons continue to revolve the valves are actuated by their controlling mechanism to close the inlet and outlet ports just described and to open the inlet and outlet ports entering the opposite pistonchamber. This causes live steamv to enter through the upper left-hand port 17 and the lower lieft-hand port 16, the upper left-hand port 16 and the lower left-hand port 17 serving as exhaust.

From the foregoing description 'it Will vbe evident that the pistons alternately become the controlling-lever-29 and the rod connect- IOO the driving and driven pistons, and also that ,there is always some pressure of steam upon the driven piston to prevent dead-center.

In Fig. 4 the parts are shown-in reverse position, the valves being turned so the ports that serve as exhaust-ports in Fig. 2 will serve as inlet-ports 'in Fig. et.

I claim- 1. A rotary engine of the class described, having a pair of piston-chambers, the pistons rotatably mounted therein, abutments working in connection with said pistons, the pair of rotary valves arranged adjacent each of said piston-chambers, each of said valves being connected with the adjacent piston-chamber by ports opening into said chamber upon opposite sides of the abutments, an'd mechanism operated from said pistons for actuating and piston-chambers, a crank carried by each of said valves,'a pivoted double crank, a connection between said valve-cranks and double crank, an eccentric, a connection between said eccentric and double crank, and an operative connection between said eccentric and one of said pistons.

4. A rotary engine of the class described, having apair of piston-chambers, pistons mounted therein, abutinents Working in the walls of said chambers,rotary valves arranged in chambers adjacent 'to said piston-chambers, an eccentric operatively connected with said valves and gear connection between said eccentric and one of the pistons.

5. A rotary engine of the class described, having a pair of piston-chambers, pistons arranged therein, abutments working in the walls of said chambers,rotary valves arranged in chambers adjacent to said piston-chambers, ports connecting said valve-chambers and piston-chambers, an eccentric, an operative connection between said eccentric and valves, a gear driven by one of said pistons, and a pin-and-slot connection between said gear and eccentric.

In testimony whereof I affix my signature in the presence of two witnesses.

PETER KAHELLEK.

Vitnesses:

C. F. WiLLsoN, W. F.. TRUAX. 

